redimension array

[y]

Hi,

I have an array with 2 elements and I would like to keep
the elements but redimension the array so that I can add
another value.

How do I do this.

I have tried this but, i think I have screwy logic.

Thanks
intRedimArray = arr_Selected.Length;
object tmp_arr = arr_Selected.Clone();
arr_Selected (string [])tmp_arr;
arr_Selected = new string[intRedimArray];

arr_Selected[intArrayCounter-1] = strToAdd;
tmp_arr= null;

the program will keep showing 1.
MessageBox.Show(arr_Selected.Length.ToString());
Thanks for your help,

y

[Peter Rilling]

You might be better off using an ArrayList.

"y" <[e-mail]> wrote in message
news:09****************************@phx.gbl...

Hi,

I have an array with 2 elements and I would like to keep
the elements but redimension the array so that I can add
another value.

How do I do this.

I have tried this but, i think I have screwy logic.

Thanks
intRedimArray = arr_Selected.Length;
object tmp_arr = arr_Selected.Clone();
arr_Selected (string [])tmp_arr;
arr_Selected = new string[intRedimArray];

arr_Selected[intArrayCounter-1] = strToAdd;
tmp_arr= null;

the program will keep showing 1.
MessageBox.Show(arr_Selected.Length.ToString());
Thanks for your help,

y

[Jack Hanebach]

"y" <[e-mail]> wrote in message
news:09****************************@phx.gbl...

intRedimArray = arr_Selected.Length;
object tmp_arr = arr_Selected.Clone();
arr_Selected (string [])tmp_arr;
arr_Selected = new string[intRedimArray];

arr_Selected[intArrayCounter-1] = strToAdd;
tmp_arr= null;

the program will keep showing 1.
MessageBox.Show(arr_Selected.Length.ToString());

This won't work because the array size for 'new string[intRedimArray]'
should be a compile time constant. You can use Array.CreateInstance instead.

[Jay B. Harlow [MVP - Outlook]]

y,
To redimension an array you need to create a new array, copy the existing
elements to the new array, start using the new array.

Something like:
string[] list;

int newLength = list.Length + 5;

string[] temp = new string[newLength];
list.CopyTo(temp, 0);

list = temp;

Note, if you are decreasing the size of the array, you can use Array.Copy
instead of CopyTo.

Array.Copy(list, 0, temp, 0, newLength);

Actually Array.Copy works for either increasing or decreasing the array. As
long as you don't try to copy more elements than what is in the source array
or the destination array.

Hope this helps
Jay

"y" <[e-mail]> wrote in message
news:09****************************@phx.gbl...

Hi,

I have an array with 2 elements and I would like to keep
the elements but redimension the array so that I can add
another value.

How do I do this.

I have tried this but, i think I have screwy logic.

Thanks
intRedimArray = arr_Selected.Length;
object tmp_arr = arr_Selected.Clone();
arr_Selected (string [])tmp_arr;
arr_Selected = new string[intRedimArray];

arr_Selected[intArrayCounter-1] = strToAdd;
tmp_arr= null;

the program will keep showing 1.
MessageBox.Show(arr_Selected.Length.ToString());
Thanks for your help,

y

[Val Savvateev]

This won't work because the array size for 'new string[intRedimArray]'
should be a compile time constant.

I'm affraid this statement is not quite correct....

[Jack Hanebach]

"Val Savvateev" <[e-mail]> wrote in message
news:ut***************@TK2MSFTNGP10.phx.gbl...

This won't work because the array size for 'new string[intRedimArray]'
should be a compile time constant.

I'm affraid this statement is not quite correct....

I'm affraid you're right... my C++ background is showing :)